... low noise high efficiency ZLYJ series gear reducer,ZSYL series speed reducer ,ZLYJ series speed reducer ,IntroductionZLYJ series reducer is specially designed ... of tooth surface are HRC54 ~ 62. In fore-end of hollow shaft the reducer is equipped with large-sized ... 's precision is compatible with GB 10095-88, grade 6model series ZLYJ112, ZLYJ133, ZLYJ146, ZLYJ173, ZLYJ200, ZLYJ225, ZLYJ250, ZLYJ280, ...